Some sections of the US media had reported that Iranian rockets had come about 1,500 metres close to US warships, including the aircraft carrier USS Harry S. Truman, when they were entering the Gulf on Saturday.

However, the Iranian Revolutionary Guards said that no such live fire exercise was conducted at the time, and called such reports 'psychological warfare'.

"The IRGC Navy has had no drill in the Strait of Hormuz over the past week during the time claimed by the Americans for launch of a rocket or missile," IRGC Public Relations Chief General Ramezan Sharif said on Thursday, according to Press TV.

"Publication of such false news under the current conditions is more of a psychological warfare and questionable," the Iranian official added.

Navy Commander Kyle Raines, spokesman of the US Central Command, had called the reported incident 'highly provocative'.

The report is likely to have raised tensions between Iran and the US, especially as the Barack Obama government is reported to have started preparing new sanctions on international companies over Iran's ballistic missile tests in October.